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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
1.5 KiB
C
85 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2007
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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/*
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* This file is originally a part of the GCC testsuite.
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* Check that certain subnormal numbers (formerly known as denormalized
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* numbers) are rounded to within 0.5 ulp. PR other/14354.
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*/
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#include <common.h>
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#include <post.h>
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GNU_FPOST_ATTR
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#if CONFIG_POST & CONFIG_SYS_POST_FPU
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union uf
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{
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unsigned int u;
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float f;
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};
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static float
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u2f (unsigned int v)
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{
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union uf u;
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u.u = v;
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return u.f;
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}
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static unsigned int
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f2u (float v)
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{
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union uf u;
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u.f = v;
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return u.u;
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}
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static int ok = 1;
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static void
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tstmul (unsigned int ux, unsigned int uy, unsigned int ur)
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{
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float x = u2f (ux);
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float y = u2f (uy);
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if (f2u (x * y) != ur)
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/* Set a variable rather than aborting here, to simplify tracing when
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several computations are wrong. */
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ok = 0;
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}
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/* We don't want to make this const and static, or else we risk inlining
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causing the test to fold as constants at compile-time. */
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struct
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{
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unsigned int p1, p2, res;
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} static volatile expected[] =
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{
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{0xfff, 0x3f800400, 0xfff},
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{0xf, 0x3fc88888, 0x17},
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{0xf, 0x3f844444, 0xf}
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};
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int fpu_post_test_math7 (void)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(expected); i++)
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{
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tstmul (expected[i].p1, expected[i].p2, expected[i].res);
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tstmul (expected[i].p2, expected[i].p1, expected[i].res);
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}
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if (!ok) {
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post_log ("Error in FPU math7 test\n");
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return -1;
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}
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return 0;
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}
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#endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */
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